mm: vmscan: remove old flusher wakeup from direct reclaim path

[karo-tx-linux.git] / mm / vmscan.c

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 83c92b866afe5198491d949197f37d3ee4dd6500..ce2ee8331414f16e8315e0eecb48e6d546f7a289 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2757,8 +2757,6 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
                                          struct scan_control *sc)
 {
        int initial_priority = sc->priority;
-       unsigned long total_scanned = 0;
-       unsigned long writeback_threshold;
 retry:
        delayacct_freepages_start();
 
@@ -2771,7 +2769,6 @@ retry:
                sc->nr_scanned = 0;
                shrink_zones(zonelist, sc);
 
-               total_scanned += sc->nr_scanned;
                if (sc->nr_reclaimed >= sc->nr_to_reclaim)
                        break;
 
@@ -2784,20 +2781,6 @@ retry:
                 */
                if (sc->priority < DEF_PRIORITY - 2)
                        sc->may_writepage = 1;
-
-               /*
-                * Try to write back as many pages as we just scanned.  This
-                * tends to cause slow streaming writers to write data to the
-                * disk smoothly, at the dirtying rate, which is nice.   But
-                * that's undesirable in laptop mode, where we *want* lumpy
-                * writeout.  So in laptop mode, write out the whole world.
-                */
-               writeback_threshold = sc->nr_to_reclaim + sc->nr_to_reclaim / 2;
-               if (total_scanned > writeback_threshold) {
-                       wakeup_flusher_threads(laptop_mode ? 0 : total_scanned,
-                                               WB_REASON_VMSCAN);
-                       sc->may_writepage = 1;
-               }
        } while (--sc->priority >= 0);
 
        delayacct_freepages_end();